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Annotation of kernel/machdep/i386/kernel_pmon.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /* 
        !            26:  * Copyright (c) 1990 NeXT, Inc.
        !            27:  *
        !            28:  * This file is the single kernel kernel include file for the pmon interface.
        !            29:  *
        !            30:  * HISTORY
        !            31:  *
        !            32:  * 1-Mar-90    Brian Pinkerton at NeXT
        !            33:  *     Created
        !            34:  *
        !            35:  */
        !            36: 
        !            37: #ifdef DEBUG
        !            38: 
        !            39: #define PMON   1                       /* make PMON conditional on DEBUG */
        !            40: 
        !            41: #import <sys/types.h>
        !            42: #import <sys/proc.h>
        !            43: #import <sys/time_stamp.h>
        !            44: #import <machine/eventc.h>
        !            45: #import <machine/pmon.h>               /* generic pmon interface */
        !            46: #import <machine/pmon_targets.h>       /* list of kernel pmon targets */
        !            47: 
        !            48: 
        !            49: extern int pmon_flags[];               /* currently enabled event masks */
        !            50: extern void(*pmon_event_log_p)();      /* pointer to pmon_event_log() 
        !            51:                                           (set by the kern_loader)  */
        !            52: 
        !            53: 
        !            54: /*
        !            55:  *  This is the usual interface to pmon in the kernel.  It just checks to
        !            56:  *  see if the source,event_type pair is enabled, and if so, grabs the 
        !            57:  *  current clock and logs the event.
        !            58:  */
        !            59: 
        !            60: static inline void pmon_log_event(source, event_type, data1, data2, data3)
        !            61:        int source, event_type;
        !            62:        int data1, data2, data3;
        !            63: {
        !            64:        if (pmon_flags[source] & event_type) {
        !            65:            struct tsval event_timestamp;
        !            66:     
        !            67:            event_set_ts(&event_timestamp);
        !            68:            (*pmon_event_log_p)(source,
        !            69:                    event_type,
        !            70:                    &event_timestamp,
        !            71:                    data1,
        !            72:                    data2,
        !            73:                    data3);
        !            74:        }
        !            75: }
        !            76: 
        !            77: #else /* DEBUG */
        !            78: 
        !            79: 
        !            80: /*
        !            81:  *  If we don't have a debug kernel, make sure to turn off pmon event
        !            82:  *  logging.  We import the definitions anyway, so nothing will be undefined.
        !            83:  */
        !            84: 
        !            85: #import <machine/pmon.h>               /* generic pmon interface */
        !            86: #import <machine/pmon_targets.h>       /* list of kernel pmon targets */
        !            87: 
        !            88: #define pmon_log_event(source, event_type, data1, data2, data3)
        !            89: 
        !            90: #endif /* DEBUG */
        !            91: 
        !            92: 
        !            93: 

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